KR20230038779A - Sealing insert for corrugated pipe thread fastening system, corrugated pipe thread fastening system, use of sealing insert, use of corrugated pipe thread fastening system, and method for corrugated pipe fitting - Google Patents

Abstract

A sealing insert for a corrugated pipe threaded fastening system comprising a sealing insert for accommodating a corrugated pipe, in particular a cut-out completely passing through the sealing insert formed in the direction of the longitudinal axis of the sealing insert, is proposed. The inner wall portion defining the cutout comprises at least one, preferably a plurality, in particular at least two, at least partially circumferentially extending ribs.

Description

Sealing insert for corrugated pipe thread fastening system, corrugated pipe thread fastening system, use of sealing insert, use of corrugated pipe thread fastening system, and method for corrugated pipe fitting

The present invention relates to a sealing insert for a corrugated pipe threaded fastening system, a corrugated pipe threaded fastening system, and a use of the sealing insert and the corrugated pipe threaded fastening system, and a method for corrugated pipe fittings.

Hitherto, only fittings for corrugated tubes, eg corrugated tubes attachable to connection structures, and cable protection systems comprising fittings for the corrugated tubes are known from the prior art. The fittings known from the prior art are not tight as such, but rather have to introduce an additional seal to ensure tightness against the penetration of liquids. To ensure special sealing requirements, a cable thread fastening system must be provided downstream of the fitting, which makes the structure very large.

Accordingly, an object of the present invention is to improve the fitting known from the prior art. In particular, it is an object of the present invention to provide a compact fitting or system in which a corrugated tube can be tightly attached to a connecting structure.

The object according to the present invention is achieved by a sealing insert for a corrugated pipe threaded fastening system comprising a cutout for accommodating a corrugated pipe, wherein the inner wall of the sealing insert defining the cutout has at least one, preferably a plurality, In particular, it includes at least two, partially circumferentially extending ribs.

Further, the object according to the present invention is achieved by a corrugated pipe threaded connection system comprising at least a pressing thread, a threaded fastening body and a sealing insert. Further, an object according to the present invention is achieved by using a sealing insert of a corrugated pipe threaded fastening system for sealing a corrugated pipe against a threaded fastening body of the corrugated pipe threaded fastening system.

The object according to the present invention is also achieved by the use of a corrugated pipe threaded fastening system for connecting a corrugated pipe to a connecting structure.

Further, the object according to the present invention is achieved by a method for fitting a corrugation valley having a plurality of corrugations to a connection structure, the method comprising the following steps:

- fitting the pressing thread onto the corrugated tube;

- inserting the corrugated tube into the cut-out of the sealing insert such that at least one rib, preferably a plurality of ribs, in particular at least two ribs, engages with the corrugations troughs, where at least two ribs are provided, these are two corrugations engaging with the minor bones, substantially, if there are a predetermined number of ribs, these ribs are engaged with the number of corrugated bones corresponding to the number of ribs in the corrugated pipe;

- inserting the threaded fastening body into the connecting structure;

- inserting the sealing insert together with the corrugated tube into the threaded fastening body;

- screwing the pressing thread onto the threaded fastening body in such a way that a material displacement of the material of the sealing insert is produced by the pressing thread, the material being at least partially sealed against the corrugated pipe.

A sealing insert for a corrugated pipe threaded fastening system comprising a sealing insert for receiving a corrugated pipe, in particular a cut-out completely passing through the sealing insert, formed in the longitudinal axial direction of the sealing insert, is proposed. The inner wall portion defining the cutout comprises at least one, preferably a plurality, in particular at least two, at least partially circumferentially extending ribs.

In the sense of the present invention, a corrugated tube is an outer diameter that varies in a wavy manner in the longitudinal direction of the tube, in particular in the longitudinal direction of the tube, more preferably over the entire length of the tube, at least in some regions or partial lengths of the tube, preferably over the entire length of the tube. is also a material, for example of plastic or metal, having an inner diameter that varies in a wavy manner in the longitudinal direction, even more preferably a diameter that varies in the outer and inner diameters in which the corrugations coincide with respect to its corrugations troughs and corrugations crests. It is a pipe made of material. A corrugated tube is flexible because of the corrugations due to the formation of corrugations at least on the outer surface of the tube, preferably on the inner surface of the tube. Preferably, the corrugation is a diameter change formed in a ring-shaped manner in the longitudinal direction. At least two corrugations intersect between the two corrugation crests to form corrugation crests and corrugation troughs. The waveform portion may be of a continuous type or a discrete type. For example, the corrugation part configured in a continuous form is a longitudinal section of a corrugated pipe and is substantially a sinusoidal wave. In an exemplary configuration of corrugations having discrete courses of corrugations, particularly between two corrugations crests, these corrugations have flat portions that form corrugations troughs on the outer surface of the corrugations. In cross section, the corrugation crest can be designed approximately or exactly sinusoidal, rectangular, trapezoidal, semicircular or partly elliptical. In the connection of the corrugated tube, a threaded fastening system with an insert engaging around a cable or hose induced in the corrugated tube can be provided or arranged, so that stability is imparted in the threaded fastening system, and advantageously, a certain seal is provided by the insert. effect can be achieved.

When the term "substantially" is used in this context, it denotes a tolerance justifiable to those skilled in the art from an economic and technical point of view, within which the corresponding features may still be recognized or implemented.

In one configuration, the sealing insert is provided with a substantially cylindrical shape. In another embodiment, the sealing insert is provided having a first end face and an opposite second end face. More preferably, the sealing insert comprises an outer shell, preferably having the configuration of an at least partially cylindrical shell. More preferably, the sealing insert includes a cutout formed to completely pass through the sealing insert.

In the meaning of the present invention, "completely through" means that the cutout extends completely from the first end face to the second end face along the longitudinal axis of the sealing insert in the longitudinal direction defined therethrough. Defines the length of the insert and hence the length of the inner wall Preferably, the cutout is configured to receive the corrugated tube.

In one embodiment, the cutout includes a segmented interior wall portion. The inner wall defining the cutout may be configured to be at least partially cylindrical and/or at least partially conical.

In one configuration, a fully through cutout is defined by the interior wall portion. The inner wall portion has a first inner wall portion. In one embodiment, a first inner wall portion is provided in association with the first end face portion of the sealing insert. In another embodiment, the first inner wall portion is provided in association with the second end face portion of the sealing insert. More preferably, the first inner wall portion comprises at least one, preferably partially circumferentially extending plurality of ribs. In particular, the rib is configured to extend in a radially inward direction, preferably into the cavity formed by the cutout. The ribs are preferably formed to extend completely circumferentially. In the meaning of the present invention, the term "circumferential" is to be understood as meaning that the longitudinal extent of the rib extends along the circumference of the inner wall. The longitudinal extent of the rib extends perpendicular to the longitudinal axis of the sealing insert. Ribs extending fully circumferentially form a closed ring. The rib may also have a partially circumferential configuration. Preferably, the partially circumferential ribs do not extend over the entire circumference of the inner wall portion, but form one or more rib segments, which may also be referred to as ring segments. In another configuration, a plurality of rib segments are arranged at the level of the inner wall, which are spaced apart from each other, preferably in the circumferential direction. A plurality of rib segments arranged at a height on the inner wall in the circumferential direction should be understood in the sense of the present invention as partially circumferentially extending ribs.

In another embodiment, it is provided that the cross section of the rib is designed approximately or exactly trapezoidal, rectangular, triangular, arc segment-shaped and/or partially elliptical. Preferably, each of the ribs is at an angle of from about 60° to about 90°, preferably from about 65° to about 75°, more preferably from about 65° to about 75° from one another, particularly in the case of a triangular, trapezoidal and/or arc-segment-shaped design of the ribs. Preferably it has two side parts with an angle of about 70°. In a preferred embodiment, which can be referred to as a rectangle, the two side parts are connected to each other via a middle part. In turn, the two side parts are substantially parallel to each other. The middle part can be configured linear or arcuate.

Preferably, the first inner wall portion has therein a plurality of partially circumferentially extending ribs, preferably from about 2 to about 10, more preferably from about 3 to about 4, and preferably fully circumferential. It has ribs extending to

In the context of the present invention, when the term “about” is used in relation to a value or range of values, it should be understood to mean a tolerance value customarily regarded by one skilled in the art, in particular ±20 %, preferably ±10%, more preferably ±5%. As long as different value ranges, for example preferred value ranges and more preferred value ranges, are indicated in the present invention, the lower and upper limits of the different value ranges may be combined with each other.

In another configuration, the ribs are provided which are spaced apart from one another by spacing in the longitudinal direction of the sealing insert, preferably by approximately uniform spacing. In particular, the spacing of the ribs is dimensioned to allow engagement of the corrugation crests of the corrugated tube between the ribs. In particular, if only one rib is provided, it can be arranged in the corrugation trough of the corrugated tube. In this embodiment, the rib preferably has a design for its shape applied to the corrugation trough of the corrugated tube, in particular corresponding substantially with respect to its outer contour to the contour of the corrugation trough. Preferably, the spacing of the ribs, the radial extent of the ribs into the cavity formed by the cutout, the cross-sections of the ribs and/or the angle of the side portions of the ribs apply to the corrugation of the corrugated tube over at least a partial area or partial length thereof. , which can be or is intended to be combined with the sealing insert. Preferably, the outer contour of the rib substantially corresponds to the contour of the corrugation trough of the corrugated tube. In particular, the sealing insert is designed in such a way that, in the case of a design with at least two ribs, engagement in the corrugation troughs of the corrugated tube is possible by means of these ribs. In another preferred embodiment, the ribs are provided with equal center-to-center spacing, such as a center-to-center corrugation trough of a corrugated tube that can be used with a sealing insert. Preferably, the extension of the rib in the longitudinal direction of the sealing insert is smaller than or equal to the extension of the longitudinal corrugation trough of the corrugated pipe.

In another embodiment, it is provided that the center-to-center spacing of two longitudinally adjacent ribs of the sealing insert is from about 1 mm to about 1 cm.

In another configuration, the at least partially circumferentially extending ribs are distributed over the length of the first interior wall portion, and in an alternative configuration preferably over the entire length of the interior wall portion defining the cutout. Accordingly, in this alternative embodiment, the design of the inner wall portion is the same as the design of the first inner wall portion.

In another embodiment, the at least one rib is provided flush with the first end face or the second end face. In particular, ribs may be provided forming part of the first end face and/or the second end face.

In another configuration, the inner wall portion defining the cutout includes a second inner wall portion. Preferably, the second inner wall portion is provided not including ribs. The second inner wall portion, as described above, in an alternative embodiment is not implemented if the inner wall portion includes ribs over its entire length. In one configuration, the inner wall of the sealing insert comprises a first inner wall and a second inner wall, wherein the first inner wall comprises ribs and the second inner wall is provided without ribs. In one embodiment, the second inner wall portion is provided having a substantially smooth surface.

The lengths of the inner walls in the direction of the longitudinal axis can be selected independently of each other as required. For example, the first inner wall portion may be shorter or longer than the second inner wall portion or as long as the second inner wall portion.

In another configuration, the sealing insert is provided comprising a first end face and a second end face opposite thereto, and at least one slit extending from the first end face to the second end face. The slit allows the sealing insert to be placed conveniently around the corrugated tube, so that it is not necessary to push the corrugated tube through the sealing insert against the resistance of the sealing insert and especially the ribs.

In another configuration, the sealing insert is provided with two slits. This leads to a two-part implementation of the sealing insert, which makes it possible to quickly and conveniently provide the sealing insert to the corrugated tube. Two-part construction of the sealing insert, especially when the material of the sealing insert is so hard that it is inconvenient for the user to bend the sealing insert, or the material may plastically deform and/or break when bent to fit the sealing insert into a corrugated pipe. Examples are provided.

In another embodiment, the sealing insert is provided without slits.

In another configuration, the sealing insert is provided comprising a first outer wall portion. In particular, the first outer wall portion comprises a first outer diameter. Furthermore, in one configuration, a first outer wall portion is provided in association with the first end face portion of the sealing insert. In particular, the first outer wall portion is an outer shell surface portion of the sealing insert having a first outer diameter. Preferably, the first outer wall portion is adjacent to the first end face portion.

In another configuration, the sealing insert is provided comprising a second outer wall portion. In particular, this is the outer shell surface portion of the sealing insert having a second outer diameter. The second outer wall portion preferably abuts the second end face portion.

The lengths of the outer wall parts in the direction of the longitudinal axis can be selected independently of each other as required. For example, the first outer wall portion may be shorter or longer than the second outer wall portion, or as long as the second outer wall portion.

The lengths of the outer wall part and the inner wall part in the direction of the longitudinal axis can be arbitrarily selected independently of each other as required. For example, the first outer wall can be shorter or longer than the first inner wall, as long as the first inner wall, shorter or longer than the second inner wall, as long as the second inner wall, and/or yes For example, the second outer wall can be shorter or longer than the first inner wall, as long as the first inner wall, and/or shorter or longer than the second inner wall, or as long as the second inner wall.

In one configuration, it is provided that the material thickness of the sealing insert decreases towards the first end face and/or decreases towards the second end face. In particular, the change in material thickness is continuous. In another preferred configuration, the change in material thickness of the sealing insert is provided discontinuously, ie with steps or steps.

In another configuration, a change in material thickness of the sealing insert is provided which is configured to reduce the outer diameter of the sealing insert towards the first end face. In another configuration, the reduction of the material thickness of the sealing insert is provided that is realized by the inner diameter of the cut-off of the sealing insert increasing towards the first end face, wherein the outer diameter of the sealing insert remains substantially the same, or In particular, by providing a step difference, it can be increased discontinuously. In particular, the second inner wall portion of the inner wall portion of the cutoff is conical, more preferably the first and preferably second outer wall portions remain substantially cylindrical. More preferably, the taper of the second inner wall portion is provided to narrow toward the first inner wall portion.

In another embodiment, it is provided that the material thickness of the sealing insert becomes smaller towards the first or second end face only in the region of the second inner wall, and thus decreases, depending on the embodiment.

For example, the first outer wall portion and the second inner wall portion are each disposed adjacent to the first end face portion. In one embodiment, the outer diameter of the second outer wall portion is smaller than the outer diameter of the first outer wall portion. The first inner wall portion and the second outer wall portion are disposed adjacent to the second end face portion. The first outer wall portion and the second outer wall portion are each formed in a cylindrical shape. The first inner wall portion is formed in a substantially cylindrical shape and has an inwardly protruding rib. In this embodiment, the second inner wall portion is formed conically and has an inner diameter that increases towards the first end face.

In another embodiment, it is provided that the material thickness of the sealing insert in the region of the second inner wall is provided substantially constant over its length in the longitudinal direction of the sealing insert. Further, it is preferred that this sealing insert is formed as in the embodiment described above.

In particular, in another configuration, it is provided that the material thickness of the sealing insert in at least one portion of the second inner wall part becomes smaller towards the first end face of the sealing insert and thus decreases.

In another configuration, the sealing insert includes a first outer wall portion having a first outer diameter, and a second outer wall portion having a second outer diameter, wherein the first outer diameter is provided to be larger than the second outer diameter. In particular, a circumferentially extending shoulder portion, which may also be referred to as a step, is formed between the first outer wall portion and the second outer wall portion. Preferably, a step or discontinuous transition in the shape of the shoulder portion is provided from the first outer diameter to the second outer diameter. In another configuration, a continuous transition is provided from a first outer wall portion having a first outer diameter to a second outer wall portion having a second outer diameter, wherein in one embodiment at least one segment of the outer wall portion is a sealing insert. It is conically formed towards the second end face. In another embodiment, it is provided that the material thickness of the sealing insert is configured constant towards the second end face.

In another configuration, the sealing insert includes anti-rotation means. In one configuration, an anti-rotation means is provided arranged on the outer shell of the sealing insert.

In another configuration, the anti-rotation means is provided comprising a plurality of latching elements arranged parallel to the longitudinal direction of the sealing insert. The latching elements can be configured as grooves and/or ribs, for example. In particular, the groove may be a longitudinally extending notch or cutout. A rib is a longitudinally extending protrusion, in particular projecting radially outward. Preferably, the anti-rotation means is associated with the second outer wall portion. More preferably, the anti-rotation means is disposed adjacent to the first outer wall portion and to the second outer wall portion. In another configuration, it is provided that the latching element disposed parallel to the longitudinal axis extends from the first outer wall portion to the second end face adjacent to the second outer wall portion, and thus extends over the entire length of the second outer wall portion. do.

In another configuration, the anti-rotation means is provided disposed on the second outer wall portion and spaced apart from the second end face portion. In particular, the second outer wall portion is formed as a smooth or flat surface between the anti-rotation means and the second end surface portion.

In another configuration, the anti-rotation means is provided disposed on the second outer wall portion and spaced apart from the first outer face portion. In particular, between the anti-rotation means and the first outer wall portion, a surface of the second outer wall portion is smooth or flat. In this configuration, the anti-rotation means can extend to the adjacent second end face of the sealing insert.

In another preferred configuration, the anti-rotation element is preferably arranged with a full circumferential extension on the outer shell. In particular, the latching elements are uniformly distributed around the circumference of the second outer wall portion. The latching element of the anti-rotation means can be molded into a rib-like cross-section on the inner wall of the sealing insert as described above.

In one configuration, the sealing insert is provided comprising a preferably elastically deformable material selected from the group comprising silicone, thermoplastic elastomer, and/or rubber.

In an exemplary configuration, the sealing insert includes a first end face and a second end face. An exemplary sealing insert is substantially cylindrical and has a cutout completely through it. The outer shell of the sealing insert comprises a first outer wall portion and a second outer wall portion, wherein the first outer wall portion is adjacent to the first end face and the second external wall portion is adjacent to the second end face. The second outer wall portion comprises an anti-rotation means consisting of, for example, a plurality of axis-parallel latching elements distributed on the circumference of the second outer wall portion. As an example, the anti-rotation means projects adjacent to the first outer wall portion to approximately the middle of the second outer wall portion. As an example, each of the latching elements has two side portions formed approximately parallel to each other, or at a side angle of about 70° to each other, which side portions, viewed in cross section, have been described above in connection with the rib design of the inner wall. As described above, they are connected by the middle part.

An exemplary sealing insert includes a slit that passes completely from the first end face to the second end face. By using a slit, the sealing insert can be bent open and attached onto a corrugated tube, not shown here. In another exemplary configuration, the sealing insert is composed of two parts, wherein the sealing insert has two slits passing completely from the first end face to the second end face.

The fully through cutout includes a first inner wall portion and a second inner wall portion. The second inner wall portion has a smooth surface. It also has a conical configuration. In particular, the inner wall part tapers from the second inner wall part towards the first inner wall part, or each inner wall part widens towards the first end face of the sealing insert. The inner diameter of the second inner wall part increases towards the first end face of the sealing insert. The second inner wall portion has a second material thickness that tapers or decreases at least in a particular cross section toward the first end face, thereby making the cutoff of the second inner wall portion conical.

As an example, the first inner wall portion includes four ribs extending circumferentially on the inner wall portion of the cutout. The first inner wall portion is adjacent to the second end face portion. In an alternative exemplary configuration, the ribs are distributed substantially uniformly over the entire height of the interior wall portion. In this configuration, the sealing insert has only the first inner wall portion. The at least one rib may be flush with the end face such as the first end face and/or the second end face.

On the outer shell, the exemplary sealing insert includes a first outer wall portion and a second outer wall portion. The first outer wall portion has a first outer diameter larger than the second outer diameter of the second outer wall portion. This forms a shoulder that prevents the sealing insert from being pushed too far through the threaded fastening body, for example a double nipple or another, in particular a plug-like component having a threaded portion arranged on at least one side for arranging a pressing thread.

In a second exemplary embodiment, a sealing insert is provided comprising a first inner wall portion of the cutout and a second inner wall portion of the cutout. In a second exemplary configuration, the first inner wall portion having internally circumferentially extending ribs is adjacent to the first end face, wherein in particular the internally circumferentially extending rib is flush with the first end face. am. Accordingly, the first inner wall portion of the cutout is approximately disposed within the region of the first outer wall portion. In addition to this, the second inner wall portion of the cutout is disposed approximately in the region of the second outer wall portion.

Also proposed is a corrugated pipe threaded fastening system comprising at least one pressing thread as described above, a threaded fastening body and a sealing insert.

The threaded fastening body can in particular be designed as a double nipple, or else as a plug housing or component with a thread arranged on at least one side, for example for arranging a pressing thread. Preferably, the threaded fastening body has a first external thread, more preferably a second external thread. More preferably, the threaded fastening body includes a key support structure having at least one key support surface between the first external thread and the second external thread. In one configuration, the key support structure includes a stop face for the pressing thread. If the threaded fastening body is not designed as a double nipple and in particular does not have a key holding structure, this is nonetheless a stop face provided by, for example, a plug housing or a part of the threaded fastening body arranged opposite to the threaded part. can have When the pressing screw part is screwed onto the screw part fastening body, it can be screwed with the screw part to the extent that it is screwed with the thread part to the stop surface, in particular, and is fixed to the threaded part fastening body. In particular, the pressing thread may be screwed onto the thread fastening body with the thread until it abuts against the block provided by the stop face. This has the advantage that the pressing thread cannot unscrew itself from the thread fastening body, for example due to temperature fluctuations or vibrations. In particular, the pressing thread consists of a union nut with a central through-cutout. In particular, the pressing thread has a pressing contour on the inner wall of the cutout, whereby the sealing insert at least partially inserted into the threaded fastening body can be deformed when the pressing thread is screwed onto the threaded fastening body.

In one configuration, the threaded fastening body is provided comprising anti-rotation means corresponding to the anti-rotation means of the sealing insert. In particular, the sealing insert includes a rib, preferably a plurality of ribs, on the second outer wall, and the threaded fastening body includes a groove, preferably a plurality of grooves, into which the ribs of the sealing insert can engage. In a further configuration, the threaded fastening body has a rib, preferably a plurality of ribs, on the inner surface of the passage cut-out, wherein the ribs are provided for engaging in the grooves of the anti-rotation means of the sealing insert. In another configuration, both the sealing insert on the second outer wall and the threaded fastening body on the inner surface have a rib, preferably a plurality of ribs, which are provided to engage one another in each case, preferably in a mutually offset manner.

A first exemplary configuration of a corrugated pipe thread fastening system includes a pressing thread and a thread fastening body into which the pressing thread can be screwed. The sealing insert is arranged in the region of the threaded fastening body, in particular at least one external thread of the threaded fastening body. For example, an annular groove in a key support structure or an O-ring disposed in an area of a support surface on a threaded fastening body may seal the latter against a connecting structure that is not part of the proposed corrugated pipe threaded fastening system, which is for example For only fuse boxes, mechanical parts, etc. are formed. The threaded part fastening body has an anti-rotation means corresponding to the anti-rotation means of the sealing insert therein. The individual parallel latching elements of the anti-rotation means of the sealing insert engage in the area between the parallel latching elements of the anti-rotation means of the threaded fastening body.

In one configuration example, the inner diameter of the threaded fastening body in the area where the sealing insert is inserted is smaller than the first outer diameter of the sealing insert. Preferably, the first outer diameter is larger than the core diameter of the threaded fastening body. The core diameter has the smallest inner diameter of the threaded locking body in the insertion region of the sealing insert in the region of at least one external thread of the threaded locking body, in particular due to the parallel latching element. More preferably, the outer diameter of the first sealing insert is smaller than or approximately equal to the outer diameter of the at least one outer threaded portion of the threaded fastening body. Thus, the sealing insert is only partially inserted into the threaded fastening body, such that the first outer wall rests on the threaded fastening body and, in particular, is supported by the shoulder of the sealing insert. More preferably, the sealing insert protrudes together with the first outer wall portion from the threaded fastening body. More preferably, the sealing insert protrudes into the threaded fastening body together with the first outer wall part and/or the second outer wall part, in particular if the second outer wall part has a smaller outer diameter than the first outer wall part of the sealing insert. When the pressing thread is screwed onto the thread fastening body, it presses the sealing insert.

The pressing thread has an inner circumferential pressing contour, which presses the first outer wall portion of the sealing insert when the pressing thread is screwed onto the threaded fastening body. Preferably, regardless of the corrugated tube inserted into the corrugated tube thread fastening system, in particular within certain dimensional tolerances of the corrugated tube diameter, the pressing thread is provided with a stop face, for example by a key support structure or a part of the threaded fastening body. It can be screwed with the circumferential end face of the pressing thread to the stop face of the thread fastening body to be. Such a threaded fastening is referred to as a threaded fastening to a block in the meaning of the present invention, in which case the pressing thread, the threaded structure and the threaded fastening body support each other, so that accidental loosening, e.g. due to temperature fluctuations or vibrations, is prevented. has the advantage of being reduced. In the example of the conical configuration of the second inner wall of the cut-out of the sealing body, the material of the sealing body can be displaced, in particular radially inwards, up to the corrugated tube without damaging the corrugated tube. This is especially true if the material of the sealing insert is very strong or hard, or if the sealing insert has a large size, the conical design of the second inner wall can be used to reduce the force applied for fastening the thread to the block. This is an advantageous embodiment.

In a second exemplary configuration, the corrugated pipe fastening system includes a two-part sealing insert. Two slits are made for the two-piece configuration of the sealing insert.

Further, in a corrugated pipe threaded fastening system, the use of a sealing insert for sealing the corrugated pipe to the corrugated pipe threaded fastening system, as described above, is proposed.

Further, the sealing insert is preferably used to prevent rotation of the sealing insert and/or the corrugated tube in the threaded fastening body.

Also proposed is the use of a corrugated pipe threaded fastening system as described above for connecting a corrugated pipe to a connecting structure. The corrugated tube may also pass further inside the corrugated tube threaded fastening system and protrude on both sides thereof. Preferably, the corrugated tube is inserted into the sealing insert in such a way that, in the fitted state, it protrudes beyond the corrugated tube thread fastening system on the side of the pressing thread and on the side of the thread fastening body. The fitting condition is defined as the corrugated tube being received by the corrugated tube thread fastening system and being sealed by the tightening of its pressing thread.

In addition, a method of fitting a corrugated tube having a plurality of corrugation valleys to a fitting structure is proposed, which includes the following steps:

- fitting the pressing thread onto the corrugated tube;

- inserting the corrugated tube into the cut-out of the sealing insert such that at least one rib, preferably a plurality of ribs, in particular at least two ribs, engages one corrugation trough, where at least two ribs are provided, these are 2 engaging with the corrugation troughs of the dog, and substantially, if there is a predetermined number of ribs, these ribs are engaged with corrugation troughs corresponding to the number of ribs in the corrugated pipe;

- inserting the threaded fastening body into the connecting structure;

- inserting the sealing insert together with the corrugated tube into the threaded fastening body;

- screwing the pressing thread onto the threaded fastening body in such a way that a material displacement of the material of the sealing insert is produced by the pressing thread, the material being at least partially sealed against the corrugated pipe.

The connecting structure is a part that can be connected to the corrugated tube through the corrugated tube screw fastening system. In particular, at least one cable passing through at least one extended part, for example a corrugated tube, can be fed through the connection structure. The connecting structure is not part of the corrugated pipe thread fastening system according to the present invention. For example, the connecting structure is a wall part, a housing, a mechanical part, a plug for electrical connection or a cable guide. Preferably, the corrugated pipe thread fastening system is attached to a connecting structure that is not part of the corrugated pipe thread fastening system. Preferably, the connecting structure has a through cut-out through which the at least one elongated part can be supplied. More preferably, the corrugated pipe thread fastening system is attached to the connecting structure such that a longitudinal axis of the connecting portion is substantially perpendicular to the surface of the connecting structure and/or extends through a through-cutout. In one embodiment, the through-cutout advantageously has a threaded portion by which the threaded fastening body can be screwed with its external threaded portion. In another embodiment, the through-cutout does not have a threaded portion and is in particular configured as a bore. The threaded fastening body can be inserted through the through cutout and can be screwed in, for example using a nut on the opposite side of the connection structure if there is an external thread. However, other fastening methods are also possible depending on the design of the threaded fastening body. Preferably, the corrugated tube can be inserted into the sealing insert in a fitted state in such a way that it protrudes beyond the corrugated tube thread fastening system on the side of the pressing thread and on the side of the thread fastening body.

Preferably, the sealing insert is inserted into the threaded fastening body in such a way that the first outer wall part rests on the threaded fastening body. In one configuration, by screwing the pressing thread onto the threaded fastening body, the sealing insert disposed in the threaded fastening body and protruding beyond it is displaced in such a way that the material of the sealing insert is displaced, in particular radially inwardly. In this way, it is deformed by the pressing contour of the pressing thread on its inner side, although displacement of the material in the other direction can take place. This creates a particularly high degree of tightness, in particular due to the additional sealing provided by the ribs of the sealing insert, which fit into the corrugation troughs of the corrugated tube.

In one configuration, in particular to reliably prevent rotation of the sealing insert in the threaded locking body, it is provided that the anti-rotation means of the sealing insert is engaged with the anti-rotation means of the threaded locking body. More preferably, the latching element of the second outer wall of the sealing insert, preferably the plurality of latching elements of the second outer wall of the sealing insert, is a latching element of the threaded fastening body, preferably the plurality of latching elements of the threaded fastening body. fit the elements. More preferably, the latching elements of the anti-rotation element of the sealing insert, preferably the plurality of latching elements of the anti-rotation element of the sealing insert, are connected to the latching elements of the threaded fastening body, preferably the plurality of latching elements of the threaded fastening body. will interlock

In a further configuration, the pressing thread is provided to be screwed with the thread onto the stop face of the thread fastening body.

Threaded fastening to such a block, in particular in that the inner wall of the sealing insert defining the cut-out is designed conically, in particular the first inner wall or the second inner wall is designed to oppose the pressing thread, i.e. of the threaded fastening body. Threading of the pressing thread onto the stop face can be achieved. The advantage of threaded fastening to the block is that a uniform force is thereby applied on the corrugated pipe and damage to the corrugated pipe can be prevented, in particular due to excessive, especially precise pressure by the threaded fastening or sealing insert of the corrugated pipe. In this way, a good sealing effect is achieved.

Further advantageous configurations become apparent from the following figures. However, the enhancements described herein should not be construed as limiting; rather, the features described herein may be combined with the foregoing features for additional configurations. In addition, it should be noted that reference symbols indicated in the description of the drawings do not limit the scope of protection of the present invention, but only refer to exemplary embodiments shown in the drawings. Identical parts or parts of the same function have the same reference signs in the following drawings. The drawing is as follows:
1 shows a sealing insert according to the invention.
FIG. 2 shows a second end face of the sealing insert of FIG. 1 ;
Figure 3 shows the III-III section of Figure 2;
4 shows an alternative configuration of a sealing insert according to the invention.
Fig. 5 shows a top view of a second end face of the sealing insert of Fig. 4;
FIG. 6 shows a VI-VI cross section of FIG. 5 .
7 shows an exploded view of a corrugated pipe thread fastening system according to the present invention.
Figure 8 shows a view of the pressing thread of the corrugated pipe thread fastening system of Figure 7;
Fig. 9 shows the IX-IX cross section of Fig. 8;
10 shows another embodiment of a corrugated pipe thread fastening system according to the present invention.

1 shows a sealing insert 10 having a first end face 12 and a second end face 14 . The sealing insert 10 is substantially cylindrical and has a cutout 16 completely passing through it. The outer shell (18) of the sealing insert (10) comprises a first outer wall portion (20) and a second outer wall portion (30), wherein the first outer wall portion (20) is adjacent to the first end face portion (12). And, the second outer wall portion 30 is adjacent to the second end face portion 14. The outer diameter of the first outer wall portion 20 is larger than that of the second outer wall portion 30, and the latter are discontinuously adjacent to each other by steps 15.

The second outer wall part 30 is an anti-rotation means configured as a plurality of axially parallel latching elements 42 distributed on the circumference of the second outer wall part 30, not all of which are designated as reference groups for clarity. (40). The anti-rotation means 40 is adjacent to the first outer wall portion 20 and, in this embodiment, protrudes in its longitudinal direction to about the middle of the second outer wall portion 30 .

The sealing insert 10 includes a slit 19 that completely penetrates from the first end face 12 to the second end face 14 . By using the slit, the sealing insert 10 can be bent open and attached on a corrugated tube, not shown here.

FIG. 1 further shows that the sealing insert 10 has at least one columnar rib 62 on the inner wall 60 of the cutout 16 .

FIG. 2 shows a plan view of the second end face 14 of the sealing insert 10 of FIG. 1 . The anti-rotation means has a plurality of axially parallel latching elements 42 , which are in particular evenly arranged on the outer circumference of the second outer wall part 30 . This view also shows the rib 62 arranged in the cutout 16 passing completely through the sealing insert 10 .

Figure 3 shows the III-III section of Figure 2; The cut-out 16 passing completely in the direction of the longitudinal axis 11 comprises an inner wall part 60 forming a first inner wall part 64 and a second inner wall part 66 . The first inner wall portion 66 has a conical configuration. It is adjacent to the first end face 12 and associated with the first outer wall 20 . In particular, the inner wall portion 60 narrows from the second inner wall portion 66 toward the first inner wall portion 64 or each inner wall portion 60 widens toward the first end face portion 12 . Accordingly, the inner cross section of the inner wall portion 60 at the second inner wall portion 66 widens toward the first end face portion 12 of the sealing insert 10 . The second inner wall has a decreasing material thickness towards the first end face 12 . The cutout 16 is designed to be conical in the second inner wall 66 .

The first inner wall portion 64 comprises four ribs 62.1 to 62.4 extending circumferentially in the circumferential direction, wherein rib 62.1 corresponds to the only rib 62 clearly visible in FIG. The first inner wall portion 64 abuts the second end face portion 14 . The first inner wall portion is associated with the second outer wall portion 30 .

The outer shell 18 of the sealing insert 10 comprises a first outer wall part 20 and a second outer wall part 30 . The first outer wall portion 20 has a first outer diameter 22 greater than the second outer diameter 32 of the second outer wall portion 30 . As a result, as can be seen from the example of FIG. 9 , a step 15 formed as a double nipple prevents insertion too far into the threaded body 74 shown in FIG. 9 .

The length of the outer wall parts 20, 30 and the inner wall parts 64, 66 in the direction of the longitudinal axis 11 is illustratively shorter for the first outer wall part 20 than for the second inner wall part 66; The second inner wall portion 66 was selected to be shorter than the first inner wall portion 64 and the first inner wall portion 64 was selected to be shorter than the second outer wall portion 30 . However, independently of each other, these lengths can be selected differently according to need.

4 shows an alternative construction of the sealing insert 10 . The sealing insert 10 has a slit 19 that can be opened by bending the sealing insert 10 in order to fix it to a corrugated pipe (not shown). The sealing insert 10 has a first end face 12 and a second end face 14 . The sealing insert 10 also has ribs 62.1, 62.2 and 62.3 extending in the inner circumferential direction. The circumferential rib 62.1 is flush with the first end face 12. In particular, the side portion of the rib 62.1 at least partially forms the first end face portion 12. An anti-rotation means (40) is arranged on the outer shell (18).

FIG. 5 shows a plan view of the second end face 14 of the sealing insert 10 of FIG. 4 . In detail V, it can be seen that the anti-rotation means 40 has an axially parallel latching element 42 with a side angle α of about 70°.

FIG. 6 shows a VI-VI cross section of FIG. 5 . The sealing insert 10 comprises a first inner wall part 64 of the cutout 16 and a second inner wall part 66 of the inner wall part of the cutout 16 . A first inner wall portion 64 having inwardly circumferentially extending ribs 62.1 to 62.4 is adjacent to the first end face portion 12, wherein the inwardly circumferentially extending rib 62.1 is the first end face portion. It is the same height as (12). The first inner wall portion 64 of the cutout 16 is associated with the first outer wall portion 20 adjacent the first end face portion 12 . The second inner wall portion 66 of the cutout 16 is associated with the second outer wall portion 30 adjacent the second end face portion 14 . A step 15 is formed between the first outer wall parts 64 , which, like the embodiment according to FIGS. 1 to 3 , has a larger outer diameter than the second outer wall part 66 .

The length of the outer walls 20, 30 and the inner walls 64, 66 in the direction of the longitudinal axis 11 is illustratively as long as the first outer wall 20 is as long as the first inner wall 64; Shorter than the second inner wall portion 66 , the second inner wall portion 66 has been selected such that the second outer wall portion 66 is shorter than the second outer wall portion 30 . However, independently of each other, these lengths can be selected differently according to need.

7 shows a corrugated pipe threaded fastening system 70 having a pressing thread 72 and a threaded fastening body 74 onto which the pressing thread 72 can be screwed. The sealing insert 10 , shaped similarly to the sealing insert 10 according to FIGS. 1 to 3 and having a slot 19 , is arranged in the threaded body 74 . An O-ring 84 disposed on the threaded fastening body 74 formed as a double nipple seals the latter against a connection structure not shown. The threaded fastening body 74 has an internal anti-rotation means 76 corresponding to the anti-rotation means 40 of the sealing insert 10 . The individual axially parallel latching elements of the anti-rotation means 40 of the sealing insert 10, designated as examples 42.1 and 42.1, are similar to those of the anti-rotation means 76 of the threaded fastening body 74, examples 78.1 and 78. , 2) and engages in the gap between the axially parallel latching elements.

In particular, the inner diameter D of the threaded fastening body 74 is smaller than the first outer diameter 22 of the sealing insert 10 . Thus, the sealing insert 10 is only within the threaded fastening body 74 such that the first outer wall 20 and the first end face 12 of the sealing insert 10 protrude beyond the threaded fastening body 74 . Partial insertion is possible. When the pressing thread 72 is screwed into the threaded fastening body 74, it presses the sealing insert 10 to seal against the corrugated pipe that can be supplied through the sealing insert 10, in particular the first outer wall part. causes displacement of the material in the region of (20).

FIG. 8 shows the corrugated pipe thread fastening system 70 of FIG. 7 in plan view of the pressing thread 72 .

Fig. 9 shows the IX-IX cross section of Fig. 8; The pressing thread 72 presses the first end wall portion 20 and the first end face portion 12 of the sealing insert 10 when the pressing thread portion 72 is screwed onto the thread fastening body 74. It has a circumferential pressing contour (73). When the end face portion 71 of the pressing thread 72 is in contact with the stop face portion 80 of the thread fastening body 74, not shown herein, independent of the corrugated pipe, particularly within a predetermined dimensional tolerance of the corrugated pipe diameter. It has a circumferential end face 71 to which the pressing thread 72 can be screwed. In this embodiment, the stop face 80 is formed by a key support structure 79 formed on the threaded fastening body 74 . This thread fastening is referred to as a thread fastening to the block, since in this case the thread structure of the pressing thread 72 and the thread fastening body 74, which are not described in more detail, support each other, for example It has the advantage that accidental loosening due to temperature fluctuations or vibrations is reduced. Due to the conical configuration of the inner wall part 60 of the upper inner wall part of the cut-out 16 of the sealing body 10, corresponding to the second inner wall part 66 of the embodiment according to FIGS. 1 to 3 , the sealing body ( The material of 10) can be transferred to the corrugation tube so that a uniform contact pressure of the sealing elements on each corrugation tube is achieved so that the corrugation tube is not damaged. The sealing insert 10 is deformed under the pressure of the pressing thread 72 and, with respect to its material and dimensions, can advantageously be formed in such a way that a threaded connection to the block is made possible. The O-ring 84 is disposed in an annular groove under the key contact structure 79 of the threaded fastening body 74, which will not be described further.

10 shows another alternative configuration of corrugated pipe thread fastening system 70 . This includes a pressing thread 72 screwable onto a threaded fastening body 74 formed as a double nipple, and a sealing insert composed of two parts but otherwise constructed similarly to the sealing insert 10 shown in FIGS. 4 to 6 (10) is included. The two slots are made two slits for the two-piece construction of the sealing insert 10, but this is not further described herein. The corrugated tube threaded fastening system 70 also has an O-ring 84 attached on the threaded fastening body 74 .

The sealing insert 10 has four inner circumferentially extending ribs 61.1 to 61.4 distributed substantially uniformly over the entire length 50 of the inner wall part 60, which is the implementation of FIGS. 4 to 6 . A significant difference of the sealing insert 10 of this embodiment from the example. Thus, the sealing insert 10 has only the first inner wall part 64 . It can also be seen from the configuration shown that the circumferential rib 61 . 1 is flush with the first end face 12 of the sealing insert 10 .

The proposed corrugated pipe threaded fastening system 70 and the sealing insert 10 inserted therein are fundamentally different from previously known fittings for corrugated pipe from the prior art. In particular, the corrugated pipe thread fastening system achieves a very high level of robustness while requiring only minimal installation space. The corrugated pipe thread fastening system can also provide a direct connection to a connection structure, such as a housing wall or joint system, without the need for additional components, as is required for, for example, fittings. The corrugated tube can also be further supplied inside the corrugated tube threaded fastening system to protrude on both sides thereof. This greatly simplifies the fitting process: in particular, it is not necessary to measure the dimensions of the corrugated tube or precisely cut it prior to fitting the corrugated tube to the corrugated tube threaded fastening system according to the present invention, which, if necessary, allows fitting of the corrugated tube threaded fastening system. because it can be performed subsequently. In addition to this, the sealing effect is improved compared to known corrugated tube fastening systems, in which the corrugated tube ends are accommodated in system parts, so that the corrugated tubes are ended in known systems, which often result in a corrugated tube with its unordered cutout. This is because the location in the system parts as well as the ends do not have any influence on the sealing effect in the corrugated pipe threaded fastening system according to the present invention.

List of Reference Symbols

10 sealing insert

11 longitudinal axis

12 first end face

14 2nd end face

15 step

16 Fully Passing Cutoff

18 outer shell

19 slit

20 1st outer wall part

22 1st Apocrypha

30 2nd outer wall part

32 2nd Apocrypha

40 anti-rotation means

42 Axial-parallel latching elements

50 Length of sealing insert

60 Inner wall of cutoff

62 Ribs extending in the direction of the inner circumference

64 First inner wall portion of the cutout

66 The second inner wall of the cutout

70 Corrugated pipe thread fastening system

71 Circumferential end face of the pressing thread

72 Pressing Thread

73 pressing contour

74 thread fastening body

76 anti-rotation means

78 Axial-parallel latching elements

79 key support structure

80 stationary surface

84 o-ring

α Side angle of latching element

D inner diameter

Claims (21)

Sealing insert (10) for a corrugated tube threaded fastening system (70) comprising a cutout (16) for receiving the corrugated tube, wherein the inner wall portion (60) defining the cutout (16) is at least a part Sealing insert (10), comprising an integral circumferential rib (62). The sealing insert (10) according to claim 1, comprising at least two circumferential ribs (62). 3. The sealing insert (10) according to claim 2, wherein the ribs (62) are evenly spaced from each other. 4. Sealing insert (10) according to any one of claims 1 to 3, wherein the rib (62) has a trapezoidal, rectangular, triangular, arc-segmented or at least partially elliptical cross-section. According to claims 1 to 4,
- the inner wall part 60 comprises a first inner wall part 64 and a second inner wall part 66,
- the first inner wall part (64) comprises at least one rib (62),
- the sealing insert (10), wherein the second inner wall part (66) does not contain a rib (62). 6. The method of claim 5 comprising a first end face (12) and an opposing second end face (14), wherein the first inner wall (64) is either the first end face (12) or the second end face (14). Associated with, the sealing insert (10). 7. Sealing insert (10) according to claims 1 to 6, wherein the at least one rib (62) is flush with the first end face (12) or the second end face (14). 8. The method according to any one of claims 1 to 7, wherein the first end face (12) and the opposing second end face (14) and the second end face (14) from the first end face (12) Sealing insert (10), comprising at least one slit (19) passing through. 9. The method of claim 1 , comprising a first outer wall portion (20) having a first outer diameter (22) and a second outer wall portion (30) having a second outer diameter (32). , wherein the first outer diameter (22) is larger than the second outer diameter (32). 10. Sealing insert according to one or more of claims 1 to 9, wherein the material thickness of the sealing insert (10) decreases towards the first end face (12) or towards the second end face (14). (10). 11. The sealing insert (10) according to claim 10, wherein the material thickness of the sealing insert (10) decreases only at the second inner wall portion (66) towards the first or second end face portion (12, 14). 12. Sealing insert (10) according to one or more of claims 1 to 11, wherein an anti-rotation means (40) is arranged on the outer shell (18) of the sealing insert (10). Sealing insert (10) according to claim 12, wherein the anti-rotation means (40) comprises a plurality of latching elements (42) arranged parallel to the longitudinal axis (11) of the sealing insert (10). Corrugated pipe thread fastening system (70) comprising at least a pressing thread (72), a threaded fastening body (74) and a sealing insert (10) according to any one or more of claims 1 to 13. ). 15. The corrugated pipe threaded fastening system (70) according to claim 14, wherein the threaded fastening body (74) comprises an anti-rotation means (76) corresponding to the anti-rotation means (40) of the sealing insert (10). 16. Corrugated pipe thread fastening system (70) according to one or more of claims 14 or 15, wherein the thread fastening body (74) comprises a stop face (80) for the pressing thread (72). Sealing according to one or more of claims 1 to 13 in a corrugated pipe thread fastening system (70) according to one or more of claims 14 to 16 for sealing the corrugated pipe to the corrugated pipe thread fastening system. The use of the insert (10). Use of a corrugated pipe thread fastening system (70) according to one or more of claims 14 to 16 for connecting a corrugated pipe to a connecting structure. A method of fitting a corrugated pipe having a plurality of corrugation valleys to a connection structure, the method comprising:
- screwing a pressing thread (72) onto the corrugated tube;
- inserting the corrugated tube into the cut-out (16) of the sealing insert (10) in such a way that at least one rib (62) engages the corrugation trough of the corrugated tube;
- inserting the threaded fastening body (74) into the connection structure;
- inserting the sealing insert (10) together with the corrugated tube into the threaded fastening body (74);
- screwing the pressing thread (72) onto the thread fastening body (74) in such a way that a material displacement of the material of the sealing insert (10) is created by the pressing thread (72), wherein the material is and placing at least partially sealingly with respect to the corrugated tube. 20. The method according to claim 19, wherein the pressing thread (72) is screwed to the stop face (80) of the thread fastening body (74). 21. The sealing according to any one of claims 19 to 20, wherein the corrugated pipe is sealed in such a way that it protrudes beyond the corrugated pipe threaded fastening system on the side part of the pressing thread (72) under the fitted top and the side part of the threaded fastening body (74). inserted into the insert (10).

Images